Champions League: Chelsea, Man Utd and Celtic - in pictures

Chelsea had made a sharp start to the season and were looking for a fifth successive win in all competitions ... Photograph: Alex Morton/Action Images

Juan Mata put them ahead against FC Nordsjaelland when he swept the ball through the keeper's legs following a flowing move involving Fernando Torres Photograph: Shaun Botterill/Getty Images

It remained 1-0 until 11 minutes from time when Chelsea's Brazilian defender David Luiz sent a direct free-kick in off the post Photograph: Daniel Sannum Lauten/AFP/Getty Images

The victory was effectively in the bag Photograph: Claus Bech/EPA

Mata then dug the ball out from under his feet to make it 3-0 Photograph: Shaun Botterill/Getty Images

And Ramires slotted home from another sweeping move, this time involving Oscar, to give Chelsea a 4-0 win Photograph: Shaun Botterill/Getty Images

Sir Alex Ferguson had bemoaned his side's defensive frailties in the lead up to their fixture with Cluj of Romania at the Dr Constantin Radulescu Stadium Photograph: Andrew Couldridge/Action Images

After falling behind in five of their last six Premier League matches, United had hoped to start the match strongly. But Cluj were the more promising in the first half Photograph: Daniel Mihailescu/AFP/Getty Images

And they took the lead when Pantelis Kapetanos slotted past David De Gea in the 14th minute Photograph: Robert Ghement/EPA

United equalised in fortuitous circumstances when Robin van Persie, who was attempting a header, sent the ball over the keeper and into the net using his shoulder Photograph: Julian Finney/Getty Images

Van Persie netted again just after half-time when he expertly steered a long through-ball past the onrushing keeper with his first touch Photograph: Vadim Ghirda/AP

Celtic endured a tumultuous evening in Moscow against Spartak. they led through Gary Hooper's goal in the 12th minute before the home side hit back Photograph: YURI KADOBNOV/AFP/Getty Images

Two goals from Emmanuel Emenike - one either side of the break - gave Spartak a 2-1 advantage Photograph: Ivan Sekretarev/AP

Celtic's supporters were in raptures as Dmitri Kombarov's own goal leveled the scores before Georgios Samaras headed a winner in the 90th minute. It was Celtic's first ever away win in the Champions League group stages Photograph: Maxim Shipenkov/EPA